I finally finished installing the new amp I got cheap to power the new Kicker RMB8. I haven't installed the Kicker yet (it'll be here tomorrow)...but I did tried it out with a borrowed sub/box (man too big).
Anyways, the weird thing about this damn install is the RCA wire tapping. First, the amp won't power on. I searched through the old posts and many said that the power remote wire for the amp is the BLUE wire in the factory harness...but it is really the ORANGE wire....gave me tons of headache there to figure it out.
After getting the right wire, the damn amp still won't come on...turned out it's the ground wire..for some weird reason, I tested it with a light bulb, it came on..but when plugged into the amp, there's a pop and nothing....wiggled things around and tightened the ground wire up, it's on

As for the input wire, I misunderstood the instruction and thinking the one RCA wire is a pair (it usually comes in pair)...but when people say one, they mean ONE or (half of what usually being sold out there)...ei one plug in head...Duhhhh...stupid me.

Anyways, thinking ONE is a pair, I stripped the RCA pair, cut out all the plastic shield then the metal mesh in there exposing only the 22 gauge middle most wire...I tapped this middle RCA wire into one of the wire in the brown shield (stock amp harness) and the other middle of the "other" RCA wire into the other wire in the brown shield...in other words, there are two wires in that stock brown shielded bunch and I tapped each wire with a middle wire from the RCA (pair)....I tapped the wire by stripping it a little and solder the tap wire in btw.
I think the instruction says to tape both of these wires in the brown shield to ONE RCA wire..ei middle of the RCA wire to one wire in the brown shield and the outter mesh of the RCA (negative) to the other wire in the brown shield.

Anyways, after I did the WRONG way without knowing, I plugged it in with the already powered amp and sub..nothing.....DAMN...so I swapped the wire around (there are two inputs RCA plugin hole on the amp)..nothing, pull one of the wire out..still nothing...pull the other wire out and plugged into the white marked RCA input hole on the amp and WHAM.....MUSIC!!!! damn...this is weird..
In other words, The wire tap is from the BLUE wire in the brown shield of the stock harness (positive) and that plug into the WHITE input RCA plugin hole on the amp (negative)....but it worked...So basically, the other ORANGE wire in the brown shield of the stock harness is NOT used as the other half of the RCA wire is left dangling.

I went back and did it the RIGHT way as the instruction said...it DID NOT WORK for me....dunno why....so I went back to the original wrong way.

Amp is set on MONO and it is a 2 channels amp (ei four plugs screw for four speaker wires 1/+, 2/-, 3+, 4/-). I bridged the amp so that my sub is connected to wire 1(+) and 4(-).

Can someone please explain to me why this works? Is there a better way to do it????